SV 30 A
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Catalog excerpts

SV 30A & SV 31 Acoustic Calibrators The SV 30A - two levels and the SV 31 - one level acoustic calibrators are the State of the Art instruments. The design of both calibrators is based on the dedicated 1/2” condenser microphone and microprocessor controlled signal source including digital static pressure and temperature compensation. These both features assure excellent stability of the calibration levels and their frequency. The SV 30A and SV 31 calibrators offer exceptional price versus performance ratio on the world market of sound measurements. Type 1 sound calibrators meeting IEC 60942:2003 PTB approval 21.5/08.05 1/2” internal reference condenser microphone Microphone presence detection Built-in temperature and static pressure compensation Automatic power on/off Hand held, light weight and robust case SV 31 INSTRUMENTATION FOR SOUND & VIBRATION MEASUREMENTS

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TECHNICAL SPECIFICATIONS Calibration signal parameters Sound Pressure Level (SPL) Accuracy SPL accuracy Frequency accuracy Total Harmonic Distortion (THD) 114 dB or 94 dB (SV 30A only) with respect to 20 μPa in reference conditions IEC 60942:2003 standard, Type 1 ± 0.3 dB ± 0.2 % less than 0.25 % for 94 dB level and less than 0.75 % for 114 dB level Reference conditions Ambient temperature Atmospheric pressure Humidity Effective microphone load volume General Effective load volume sensitivity Level stabilisation time Calibrated microphones Storage temperature range CE classification 0.00027...

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